Failure could signal that the promised wave of drugs was simply an artifact of the bubble.

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And then on the way up actually my divers were quite thrilled to see me smiling at different depths and I wiggled my fingers to give them a little wave or give them an OK signal.

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This computer has no internal power supply, but when a specially designed reader sends out a radio signal, a tiny antenna draws power from the wave and uses it to wake the computer up.

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That surface wave, in turn, produces another electric signal, which is emitted via the transducer.

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However, when we notice that a new five-wave pattern on the way up has surpassed the fourth wave on the way down, we recognize it as a powerful signal that the trend is changing.

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